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EP0207025A2 - Schneidwerkzeug - Google Patents

Schneidwerkzeug Download PDF

Info

Publication number
EP0207025A2
EP0207025A2 EP86850194A EP86850194A EP0207025A2 EP 0207025 A2 EP0207025 A2 EP 0207025A2 EP 86850194 A EP86850194 A EP 86850194A EP 86850194 A EP86850194 A EP 86850194A EP 0207025 A2 EP0207025 A2 EP 0207025A2
Authority
EP
European Patent Office
Prior art keywords
cutting
insert
inserts
cutting edge
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86850194A
Other languages
English (en)
French (fr)
Other versions
EP0207025B1 (de
EP0207025A3 (en
Inventor
Aage Roos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Santrade Ltd
Original Assignee
Santrade Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Santrade Ltd filed Critical Santrade Ltd
Publication of EP0207025A2 publication Critical patent/EP0207025A2/de
Publication of EP0207025A3 publication Critical patent/EP0207025A3/en
Application granted granted Critical
Publication of EP0207025B1 publication Critical patent/EP0207025B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B51/00—Tools for drilling machines
    • B23B51/02—Twist drills
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2240/00—Details of connections of tools or workpieces
    • B23B2240/08—Brazed connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/12—Cooling and lubrication
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/18—Configuration of the drill point
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/20—Number of cutting edges
    • B23B2251/201—Single cutting edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2251/00—Details of tools for drilling machines
    • B23B2251/50—Drilling tools comprising cutting inserts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S408/00—Cutting by use of rotating axially moving tool
    • Y10S408/713—Tool having detachable cutting edge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T407/00—Cutters, for shaping
    • Y10T407/19—Rotary cutting tool
    • Y10T407/1946—Face or end mill
    • Y10T407/1948—Face or end mill with cutting edge entirely across end of tool [e.g., router bit, end mill, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/78—Tool of specific diverse material
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel
    • Y10T408/9097—Spiral channel

Definitions

  • Another object is to arrange joints between the cutting inserts such that the soldering result is optimized.
  • a drill 10 according to the invention is shown.
  • the drill 10 comprises a drill body 11 and a cutting portion 12.
  • the drill body 11 has a mainly cylindrical basic form.
  • the drill body has screw-shaped chip gullets 13,14, a fastening portion 15, and a working end 16.
  • the working end 16 has a mainly planar first support surface 17, which is perpendicularly arranged with respect to the centerline CL of the drill.
  • the working end 16 is provided with a slot in the centre of the drill body, whose walls 18,19 are perpendicular to the support surface 17.
  • the slot is displaced relative to the centre C D of the drill body such that the centre C of the slot is arranged at a distance d relative to the centre C of the drill body.
  • the object of the difference in hardness is that the peripheral cutting inserts 35,36 have a higher cutting speed than the central cutting insert 24, and therefore the former should consist of a material having an increased hardness.
  • These cutting inserts 35,36 will thus become more brittle as the toughness decreases with increasing hardness for the materials.
  • a hard but brittle material will not endure the compressive stresses arising in the centre of the drill, and therefore a softer but tougher material is chosen for the central cutting insert 24 whose cutting speed is lesser.
  • the central cutting insert is mounted, preferably by brazing, in the slot of the working end 16, so that approximately half of its major sides 31, 32 is secured to the connected slot wall 18,19, and so that the lower major surface is secured to the support surface 17.
  • the cutting edge 26' starts in or adjacent to the centre of the milling cutter, whereafter it is continuously bent in direction from the centre. Then the cutting edge 26' assumes a straight shape radially inside the cutting edge 41' of the outermost insert 35'.
  • the brazed joint between the inserts has the shape of a wedge whose apex is positioned between the cutting edges 26',41'. This apex is very narrow, merely a film.
  • the obtuse angle ⁇ ' is nearly a complementary angle to the acute angle ⁇ '; the difference is 1 to 4°, between the radially outermost support surface of the insert 24' and the cutting edge 26' at its straight portion.
  • the configuration of the cutting edges and the chip surfaces of the end mill are more closely described in the United States Patent No. 4.132.493, which hereby is incorporated in the description.
  • At least one further cutting insert may replace a part of one of the inserts, in this embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling Tools (AREA)
EP86850194A 1985-06-17 1986-06-02 Schneidwerkzeug Expired - Lifetime EP0207025B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8502979A SE456893B (sv) 1985-06-17 1985-06-17 Verktyg med loedda skaer foer spaanavskiljande bearbetning
SE8502979 1985-06-17

Publications (3)

Publication Number Publication Date
EP0207025A2 true EP0207025A2 (de) 1986-12-30
EP0207025A3 EP0207025A3 (en) 1988-08-10
EP0207025B1 EP0207025B1 (de) 1990-10-31

Family

ID=20360590

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86850194A Expired - Lifetime EP0207025B1 (de) 1985-06-17 1986-06-02 Schneidwerkzeug

Country Status (5)

Country Link
US (1) US4687387A (de)
EP (1) EP0207025B1 (de)
JP (1) JPH0683927B2 (de)
DE (1) DE3675273D1 (de)
SE (1) SE456893B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298061A1 (de) * 1987-07-02 1989-01-04 Sandvik Aktiebolag Bohrer und zugehöriger Schneideinsatz
WO1994029056A1 (de) * 1993-06-08 1994-12-22 Michael Kippe Spanabhebendes werkzeug, insbesondere bohr- oder fräswerkzeug
US6071046A (en) * 1998-03-27 2000-06-06 Iscar, Ltd. Drill

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK173819B1 (da) * 1994-07-22 2001-11-19 Niels Joergen Hansen Holdeorgan til skæreorganer og fremgangsmåde til fremstilling af et sådant holdeorgan
US5672031A (en) * 1995-05-12 1997-09-30 Kennametal Inc. Milling cutter
US5653152A (en) * 1995-09-01 1997-08-05 Kennametal Inc. Toolholder for roughing and finishing a workpiece
SE507827C2 (sv) * 1996-05-02 1998-07-20 Sandvik Ab Borr
US6000887A (en) * 1998-05-19 1999-12-14 Ingersoll Cutting Tool Company Stiff drill
US6371702B1 (en) 1999-08-18 2002-04-16 Kennametal Pc Inc. Spade blade drill and method of making
SE9903685L (sv) 1999-10-14 2001-04-15 Seco Tools Ab Verktyg för roterande skärande bearbetning, verktygsspets samt metod för tillverkning av verktygsspetsen
DE10043016B4 (de) * 2000-09-01 2006-11-23 Walter Ag Bohrnutenfräser
US6739809B2 (en) * 2001-09-19 2004-05-25 Kennametal Inc. Cutting point for a drill
DE10353514A1 (de) * 2003-11-14 2005-06-23 Heule, Ulf Bohrplatte mit klemmender Befestigung in einem Grundkörper
US7244081B2 (en) * 2004-09-09 2007-07-17 Ingersoll Cutting Tool Company Drill adapter for drill having central and lateral cutting inserts
JP2009269119A (ja) * 2008-05-07 2009-11-19 Odsk:Kk スポット超硬ドリル
JP5224902B2 (ja) * 2008-05-14 2013-07-03 株式会社東芝 総型回転切削工具および溝切削加工装置並びに溝切削加工方法
US8702357B2 (en) * 2009-02-10 2014-04-22 Kennametal Inc. Multi-piece drill head and drill including the same
US8827606B2 (en) * 2009-02-10 2014-09-09 Kennametal Inc. Multi-piece drill head and drill including the same
US9586264B2 (en) * 2009-04-28 2017-03-07 Kennametal Inc. Double-sided cutting insert for drilling tool
US9539652B2 (en) 2010-04-30 2017-01-10 Kennametal Inc. Rotary cutting tool having PCD cutting tip
US20120308319A1 (en) * 2011-06-03 2012-12-06 Karthik Sampath Rotary cutting tool having coated cutting tip and coolant holes and method of fabricating
US8926237B2 (en) 2011-07-11 2015-01-06 Kennametal Inc. Multi-piece twist drill head and twist drill including the same
JP5994654B2 (ja) * 2013-01-23 2016-09-21 三菱マテリアル株式会社 超高硬度焼結体付きドリルおよびその製造方法
DE102014111846A1 (de) * 2014-08-19 2016-02-25 Kennametal Inc. Spiralbohrer mit Keramikeinsätzen
JP2017217724A (ja) * 2016-06-07 2017-12-14 三菱マテリアル株式会社 刃先交換式ドリル

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891429A (en) * 1957-06-18 1959-06-23 Aaron Weiswasser Bearing pocket boring tool
DE2654400A1 (de) * 1976-12-01 1978-06-08 Udo Prasche In einen bohrhalter einsetzbares bohrmesser
EP0123878A1 (de) * 1983-04-27 1984-11-07 Hermann Bilz GmbH & Co Bohrwerkzeug

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2858718A (en) * 1955-12-19 1958-11-04 Theodor B Kohler Composite tool bits for substantially axially fed plunge type tools
US3017790A (en) * 1960-07-29 1962-01-23 Werle Otto Phillip Cutting tool and method of making same
JPS5221489U (de) * 1975-08-04 1977-02-15
JPS5331286A (en) * 1976-09-02 1978-03-24 Riyousuke Hosoi Ball end mill
US4222690A (en) * 1977-12-03 1980-09-16 Ryosuke Hosoi Drill having cutting edges with the greatest curvature at the central portion thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2891429A (en) * 1957-06-18 1959-06-23 Aaron Weiswasser Bearing pocket boring tool
DE2654400A1 (de) * 1976-12-01 1978-06-08 Udo Prasche In einen bohrhalter einsetzbares bohrmesser
EP0123878A1 (de) * 1983-04-27 1984-11-07 Hermann Bilz GmbH & Co Bohrwerkzeug

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0298061A1 (de) * 1987-07-02 1989-01-04 Sandvik Aktiebolag Bohrer und zugehöriger Schneideinsatz
WO1994029056A1 (de) * 1993-06-08 1994-12-22 Michael Kippe Spanabhebendes werkzeug, insbesondere bohr- oder fräswerkzeug
US6071046A (en) * 1998-03-27 2000-06-06 Iscar, Ltd. Drill

Also Published As

Publication number Publication date
JPH0683927B2 (ja) 1994-10-26
DE3675273D1 (de) 1990-12-06
SE8502979D0 (sv) 1985-06-17
EP0207025B1 (de) 1990-10-31
US4687387A (en) 1987-08-18
EP0207025A3 (en) 1988-08-10
SE8502979L (sv) 1986-12-18
SE456893B (sv) 1988-11-14
JPS6254614A (ja) 1987-03-10

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